Improvement in sash-fastener and burglar-alarm



J. WILSON. Sash-Fastener and Burglar-Alarm.

No. 2H,288. I Patented Jan. 7,1879.

Faye;

N-PETERS. PHDTD-LITHOGRAPHER, WASHINGTON D C UNITED STATES PATENTOEEIcE.

JEFFERSON WILSON, OF BEAVER FALLS, PENNSYLVANIA.

IMPROVEMENT IN SASH-FASTENER AND BURGLAR-ALARMf Specification formingpart of Letters Patent No. 211,288, dated-January 7, 1879 applicationfiled September 17, 1878.

To all whom it may concern:

Be it known that I, JEFFERSON W1LsoN, of Beaver Falls, Beaver county,Pennsylvania, have invented an Improved Sash Fastener and Burglar-Alarm,of which the following is a specification:

My invention consists in certain devices constructed to connect sashestogether and to give an alarm when one sash is moved inde pendently ofthe other; and these objects I effect by the construction shown in thedrawing, in which-- Figure l is an elevation of a window, showing myimprovements; Fig. 2, a sectional elevation; and Fig. 3, adetachedsectional view, enlarged.

A is the frame of the window, 111 which slide the unbalanced sashes B C.To the inner face of either upright of the sash Bis secured a plate, I,having projections a and a lug, a, at the upper end, to which lug is,connected a cord or chain, 00, passing over a pulley, b, and having atthe end a ring, 0, and handle d.

On the upper edge of the sash O, opposite the plate I, is secured acase, D, in which are pivoted two dogs, 0 i, a cord, 3 being connectedto the upper dog, 0, and passin gthrough an opening in the case D. Theinner end of the dogt' projects beyond the ease, and the lower outer endextends through an opening in the case, and bears against a spring-bar,h, the lower end of which is bent so as to bear against one of thewindow-panes.

To the case D are secured hooks s, and in the sash U are openings 1, tosecure similar detachable hooks, upon any one of which the ring 0 may bereadily caught by means of the handle (I, so as to connect the twosashes, that one may balance the other, thus maintaining both or eitherin any desired position.

The dog 0, falling forward, catches beneath the lugs a and locks theupper sash in any position to which it may be raised, but may be drawnback to release the sash by means of the cord 11 and may be retained bypassing the cord beneath a spring-finger, 10.

Should an attempt be made to move one sash independently of the other,the lugs a, striking the end of the dog 2', will vibrate the latter, sothat the spring-bar h will strike the pane and sound an alarm.

The alarm may be thrown out of operation by depressing the dog 43 untilthe bar h slips into a notch, 9, in the side of the dog.

It will be seen that the combined alarm, locking, and balancing deviceconsists solely of the plate I, pulley b, case D, and its attachments,capable of being readily applied to any window.

I claim-- 1. The attachment for window-sashes, con sisting of thetoothed bar I, adapted to one of the sashes, and the case D, adapted tothe other, and provided with dogs 0 i and springbar It, bent to bear onthe pane, as set forth.

2. The combination of the case D, dog 2', and elastic bar h, connectedat one end to the case and bearing with the other on the pane, as setforth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

. JEFFERSON \VILSON.

Witnesses:

JOHN W. FRY, T. H. BRACKEN.

